What is a Recession?
A recession is a significant, widespread, and sustained decline in economic activity — commonly defined as two consecutive quarters of negative GDP growth — that affects employment, spending, and financial markets.
A recession is a period of significant, widespread decline in economic activity that persists for more than a few months. The most commonly cited definition is two consecutive quarters of negative GDP (gross domestic product) growth — though economists at the National Bureau of Economic Research (NBER), which officially dates U.S. recessions, use a broader set of indicators including employment, income, industrial production, and retail sales.
Recessions are a normal, recurring feature of economic cycles. They follow periods of expansion and are eventually followed by recovery and renewed growth.
Common Causes of Recessions
No two recessions are identical, but common triggers include:
- Demand shocks — A sudden drop in consumer or business spending (as in COVID-19 in 2020)
- Financial crises — A collapse in credit markets or banking system confidence (as in 2008)
- Rising interest rates — Central banks raising rates aggressively to fight inflation can slow the economy too much
- Supply shocks — Sudden disruptions to key inputs (like oil) that raise costs and reduce output
- Asset bubbles bursting — When overvalued assets (housing, stocks, commodities) correct sharply, the wealth effect can drag down the broader economy
Key Economic Indicators During Recessions
| Indicator | What Happens During a Recession |
|---|---|
| GDP | Declines for 2+ consecutive quarters |
| Unemployment | Rises as businesses lay off workers |
| Consumer spending | Falls as households cut back |
| Industrial production | Declines |
| Corporate earnings | Fall across most sectors |
Recessions and the Stock Market
The stock market and the economy are related but don't always move together. Markets often anticipate recessions months before they're officially declared — and often begin recovering before the recession officially ends. This is why investors who wait for a recession to "officially end" before buying back in often miss much of the early recovery.
Bear markets frequently accompany recessions but don't always coincide precisely. Some recessions produce short, shallow bear markets; others (like 2008–2009) produce devastating ones.
How Investors Can Prepare
No one can reliably predict when a recession will occur or how severe it will be. But investors can prepare their portfolios:
- Maintain proper asset allocation — A mix of stocks, bonds, and cash appropriate to your time horizon and risk tolerance will help cushion the blow
- Avoid excessive margin — Leverage amplifies losses during downturns and can force selling at the worst time
- Keep an emergency fund — Having 3–6 months of living expenses in cash ensures you don't have to sell investments at depressed prices to cover expenses
- Stay the course — Historically, investors who stayed invested through recessions recovered their losses and went on to new highs
How Long Do Recessions Last?
In the U.S., post-WWII recessions have averaged about 10 months in duration. The shortest was just 2 months (2020). The longest was the Great Recession (December 2007 – June 2009), which lasted 18 months. Despite the real economic hardship they cause, recessions have always proven temporary.